EP 0840161 A4 19991124 - LIQUID CRYSTAL ALIGNING AGENT
Title (en)
LIQUID CRYSTAL ALIGNING AGENT
Title (de)
FLÜSSIGKRISTALLE AUSRICHTENDER WIRKSTOFF
Title (fr)
AGENT D'ALIGNEMENT DE CRISTAUX LIQUIDES
Publication
Application
Priority
- JP 9701635 W 19970515
- JP 14684096 A 19960516
- JP 35214296 A 19961212
Abstract (en)
[origin: US5969055A] PCT No. PCT/JP97/01635 Sec. 371 Date Jan. 15, 1998 Sec. 102(e) Date Jan. 15, 1998 PCT Filed May 15, 1997 PCT Pub. No. WO97/43687 PCT Pub. Date Nov. 20, 1997A liquid crystal alignment agent containing at least two kinds of polymers selected from the group consisting of polyamic acids and imidized polymers and having a structure obtained by dehydration and ring closure of polyamic acid. In the at least two kinds of polymers contained in the liquid crystal alignment agent, the polymer of higher imidization degree has a smaller surface free energy. The liquid crystal alignment agent gives a liquid crystal display device having less stuck image and high pretilt angle.
IPC 1-7
IPC 8 full level
C08G 73/10 (2006.01); G02F 1/1337 (2006.01)
CPC (source: EP KR US)
C08G 73/10 (2013.01 - EP US); G02F 1/1337 (2013.01 - KR); G02F 1/133723 (2013.01 - EP US)
Citation (search report)
- [E] US 5700860 A 19971223 - NISHIKAWA MICHINORI [JP], et al
- [Y] EP 0503918 A1 19920916 - JAPAN SYNTHETIC RUBBER CO LTD [JP]
- [YP] EP 0718666 A1 19960626 - JAPAN SYNTHETIC RUBBER CO LTD [JP]
- See references of WO 9743687A1
Designated contracting state (EPC)
BE DE FR GB NL
DOCDB simple family (publication)
US 5969055 A 19991019; DE 69732949 D1 20050512; DE 69732949 T2 20060223; EP 0840161 A1 19980506; EP 0840161 A4 19991124; EP 0840161 B1 20050406; KR 100433973 B1 20040716; KR 19990029009 A 19990415; WO 9743687 A1 19971120
DOCDB simple family (application)
US 98182998 A 19980115; DE 69732949 T 19970515; EP 97922059 A 19970515; JP 9701635 W 19970515; KR 19980700311 A 19980115